Respuesta :

DeanR

(x+1)(2x+1)(x-2)

= (2x+1)(x+1)(x-2)

= (2x+1)(x² -x - 2)

= 2x³ - 2x² - 4x + x^2 - x - 2

= 2x³ - x² - 5x - 2

Answer: 2x³ - x² - 5x - 2